Abstract
A Gram-stain-negative, aerobic, non-motile and rod-shaped bacterium, designated as IMCC34836T, was isolated from a freshwater stream. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain IMCC34836T was most closely related to Permianibacter aggregans HW001T (of the family Pseudomonadaceae) with 95.6 % sequence similarity and formed a robust clade with P. aggregans HW001T. The draft genome sequence of strain IMCC34836T was 4.4 Mbp in size with 59.1 mol% DNA G+C content. Average nucleotide identity and digital DNA-DNA hybridization values between strain IMCC34836T and P. aggregans HW001T were 71.2 and 22.0 %, respectively, indicating that the new strain represents a novel species. The strain contained iso-C15 : 0, summed feature 3 (C16 : 1 ω6c and/or C16 : 1 ω7c) and summed feature 9 (iso-C17 : 1 ω9c and/or C16 : 1 10-methyl) as the major fatty acids and harboured phosphatidylethanolamine, two unidentified aminophospholipids and three unidentified lipids as major polar lipids. The isoprenoid quinone detected in the strain was ubiquinone-8. Based on the phylogenetic and phenotypic characteristics, strain IMCC34836T is considered to represent a novel species of the genus Permianibacter, for which the name Permianibacter fluminis sp. nov. is proposed. The type strain is IMCC34836T (=KACC 21755T=NBRC 114416T).
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